Publications by authors named "Muhammad Azam Qamar"

Population expansion, industrialization, urban development, and climate changes increased the water crisis in terms of drinking water availability. Among the various nanomaterials for nanoremediation towards water treatment, FeS-based nanocomposites have emerged as promising candidates in the adsorptive and photocatalytic removal of contaminants. This paper, therefore, evaluates the potential of FeS-based nanocomposites for environmental applications, more specifically the combined use of adsorption and photocatalysis.

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The COVID-19 pandemic poses ongoing challenges to the sustainability of various socioeconomic sectors, including agriculture, the food supply chain, the food business, and environmental sustainability. This study employs data obtained from the World Health Organization (WHO), and Food and Agriculture Organization (FAO), as well as scientific and technical research publications, to evaluate the impacts of COVID-19 on agriculture and food security. This article seeks to highlight the profound influence of the COVID-19 pandemic on agriculture, the supply and demand of food, and the overall safety of food.

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The ability of heterogeneous photocatalysis to effectively remove organic pollutants from wastewater has shown great promise as a tool for environmental remediation. Pure zinc ferrites (ZnFeO) and magnesium-doped zinc ferrites (Mg@ZnFeO) with variable percentages of Mg (0.5, 1, 3, 5, 7, and 9 mol%) were synthesized via hydrothermal route and their photocatalytic activity was checked against methylene blue (MB) taken as a model dye.

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Article Synopsis
  • * CNTs enhance perovskite solar cell (PSC) efficiency by acting as conducting substrates, improving charge extraction, and offering mechanical flexibility, making them suitable for various applications.
  • * Despite advancements in integrating CNTs, challenges in achieving high efficiency, stability, and cost-effectiveness in PSCs remain, necessitating continued research and innovation in materials.
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Article Synopsis
  • * To help with water purification, scientists are looking at using bio-based materials made from plants (called biomass) that can clean water effectively and are environmentally friendly.
  • * The review talks about different ways to create and use these bio-based materials for cleaning wastewater, and it also suggests new ideas and improvements for the future.
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Semiconducting membrane combined with nanomaterials is an auspicious combination that may successfully eliminate diverse waste products from water while consuming little energy and reducing pollution. Creating an inexpensive, steady, flexible, and diversified business material for membrane production is a critical challenge in membrane technology development. Because of its unusual structure and high catalytic activity, graphitic carbon nitride (g-C3N4) has come out as a viable material for membranes.

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The disposal of dyes and organic matter into water bodies has become a significant source of pollution, posing health risks to humans worldwide. With rising water demands and dwindling supplies, these harmful compounds must be isolated from wastewater and kept out of the aquatic environment. In the research presented here, hydrothermal synthesis of manganese-doped zinc ferrites' (Mn-ZnFeO) nanoparticles (NPs) and their nanocomposites (NCs) with sulfur-doped graphitic carbon nitride (Mn-ZnFeO/S-g-CN) are described.

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There has been a lot of interest in the manufacture of stable, high-efficiency photocatalysts. In this study, initially Cr doped ZnFeO nanoparticles (NPs) were made via surfactant-assisted hydrothermal technique. Then Cr-ZnFeO NPs were modified by incorporating S-g-CN to enhance their photocatalytic efficiency.

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The photocatalytic activity of photocatalysts is severely hampered by limited visible light harvesting and unwanted fast recombination of photogenerated e and h. In the current study, the photocatalytic efficiency of Cu-ZnO/S-g-CN (CZS) nanocomposites was investigated against MB dye. The composite materials were designed chemical co-precipitation method and characterised by important analytical techniques.

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The growth of well-dispersed Cd-doped ZnO nanoparticles (Cd-ZnO NPs) on graphitic carbon nitride (g-CN) nanosheets was successfully achieved through the co-precipitation method for the formation of Cd-doped ZnO nanocomposites with g-CN (Cd-ZnO/g-CN NCs). The effect of different compositions of ternary nanocomposites (Cd-ZnO/g-CN NCs) on photocatalytic properties was investigated. Ternary NCs, in which 60% g-CN hybridized with 7% Cd-doped ZnO (g-CN/Cd-ZnO) NCs were proven to be optimum visible-light-driven (VLD) photocatalysts for the degradation of methylene blue (MB) dye.

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